User guide

Basic Troubleshooting Chart
Issue 2.5 April 2005 81
Display shows an error/
informational message
Most messages involve server/phone interaction.
If you are on a call and the display suddenly shows
“Discovering...,” the network connection between the
telephone and the call server was interrupted, but your call
stayed connected. The telephone automatically starts to
re-register with the call server, but until re-registration
succeeds, you do not have access to switch features and
functionality such as Transfer, or to administered feature
buttons.
If you cannot resolve the problem based on the message
received, contact your System Administrator for resolution.
Characters do not appear on
the Display screen
See”Phone does not activate after connecting it the first
time."
Check all lines into the phone to ensure that it is properly
connected.
Check the power source to ensure that your telephone is
receiving power.
Perform the following Test procedure: with the telephone
idle (on-hook), press and release the Mute button. Then
press the following numbers on the dialpad: 8 3 7 8 # (which
stands for TEST). The display should indicate the self-test
has started, then report if the test was successful or failed. If
nothing appears on the display, and the phone is receiving
power, your phone might need to be replaced.
If these suggested solutions do not resolve the problem,
reset or power cycle the phone with your System
Administrator’s assistance.
Audio quality is poor,
specifically, you hear an echo
while using a handset, static,
sudden silences (gaps in
speech), clipped or garbled
speech, etc.
Various potential network problems might be causing the
problem.
Access the Network Audio Quality screen (described in
Viewing the Network Audio Quality in Chapter 6: 4625SW IP
Telephone Options) to provide your System Administrator
with specific information related to this problem.
Contact your LAN Administrator with as complete a
description of the problem as possible.
No dial tone Check that both the handset and line cords into the phone
are securely connected. Note that there might be a slight
operational delay if you unplug and reconnect the phone.
Reset or power cycle the phone with your System
Administrator’s assistance. See the section titled Resetting
and Power Cycling the IP Telephone for details.
Contact your System Administrator if these steps do not
produce the desired result.
Problem/Symptom Suggested Solution (continued)
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